CN105738388B - A kind of industry CT scanning motion is from parallel mode and device - Google Patents
A kind of industry CT scanning motion is from parallel mode and device Download PDFInfo
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- CN105738388B CN105738388B CN201610089419.8A CN201610089419A CN105738388B CN 105738388 B CN105738388 B CN 105738388B CN 201610089419 A CN201610089419 A CN 201610089419A CN 105738388 B CN105738388 B CN 105738388B
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Abstract
The invention discloses a kind of industry CT scanning motions from parallel mode, including：The position for obtaining sweep starting point determines that ranging minimum with sweep starting point distance on scanned copy refers to busbar, obtains the first distance that sweep starting point refers to busbar with ranging；It obtains using sweep starting point as the analog scanning route of starting point, the position of reference point is chosen in the projection line that analog scanning route projects to reference planes, obtain the second distance that reference point refers to busbar to ranging；According to second distance, the position of the first distance, sweep starting point and reference point, the route by sweep starting point to target endpoint is determined.The above method can cope with scanned copy and the nonparallel facilities of fixture lathe bed, also scanned copy axis and the nonparallel situation of standard scan route can be coped with, it can be parastate by making scanning route and the actual rotation axis of scanned copy from after parallel adjustment process, ensure that the accuracy and agility of scanning.The invention also discloses a kind of industry CT scanning motions from parallel device.
Description
Technical field
The present invention relates to industrial scanning technique field, more specifically to a kind of industry CT scanning motion from parallel side
Method and device.
Background technology
Industry CT is a kind of imaging technique being widely used in multiple fields, is developed on the basis of ray detection
Come.
Existing industry CT equipment geometry site adjustment technology mostly manually adjusts, and the ray of industrial CT equipment mostly
The kinematic axis of source and detector only translates and radial motion axis, or only translation and elevating movement axis so that closes geometric position
It is that method of adjustment is cumbersome and underaction.Equipment is transported to after detection scene, and the more time is needed to carry out the geometry position of equipment
Relationship adjustment is set, equipment is made to meet the base coordinate setting of detection.Existing industry CT equipment makes the effect of site installation test
Rate is relatively low, does not adapt to the quick adjustment demand of the industrial CT equipment geometry site of Multipoint movable formula.
It is current this field in conclusion how to provide a kind of industry CT scanning motion easy to use from parallel mode
Technical staff's urgent problem to be solved.
Invention content
In view of this, the object of the present invention is to provide a kind of industry CT scanning motions from parallel mode and device, this method
Industry CT scanning motion auto-paralleling can be made in the rotary generatrix of scanned copy with device, keep scanning process easier and fast
It is prompt.
To achieve the goals above, the present invention provides the following technical solutions：
A kind of industry CT scanning motion from parallel mode, including：
The position for obtaining sweep starting point determines that ranging minimum with sweep starting point distance on scanned copy refers to busbar,
Obtain the first distance that the sweep starting point refers to busbar with the ranging；
It obtains using the sweep starting point as the analog scanning route of starting point, is projected to reference to flat in the analog scanning route
The position that reference point is chosen in the projection line in face obtains the second distance that the reference point refers to busbar to the ranging；
According to the second distance, the position of first distance, the sweep starting point and the reference point, determine by institute
State sweep starting point to target endpoint route；
Wherein, the reference planes are the common plane that the sweep starting point refers to busbar with the ranging, the target
Terminal is that the reference point is referred on the vertical segment of busbar, with the ranging to the ranging with reference to described in being at a distance from busbar
The point of first distance.
Preferably, the step of position for obtaining sweep starting point, including：
Distance measuring sensor is moved along Z axis in default starting point and is measured at a distance from the scanned copy, and the survey is obtained
Being measured away from sensor with scanned copy spacing minimum point is the sweep starting point.
Preferably, the acquisition is using the sweep starting point as the analog scanning route of starting point, in the analog scanning route
The step of projecting the position that reference point is chosen into the projection line of reference planes, including：
Determine that the analog scanning route is parallel to X-direction, distance measuring sensor is by the sweep starting point along parallel
It is moved to analog scanning terminal in the direction of X-axis；
The distance measuring sensor is moved along Z axis, and it is minimum with reference to busbar spacing with the ranging to choose the distance measuring sensor
Point be the reference point.
Preferably, it is described according to the second distance, it is described first distance, the sweep starting point and the reference point position
The step of setting, determining the route by the sweep starting point to target endpoint, including：
By the space coordinate of the sweep starting point and the reference point, determines and swept from described in the actual scanning route
Retouch starting point is along the distance relation equation that each change in coordinate axis direction moves：
Wherein, X, Y and Z be respectively in the actual scanning route by the sweep starting point along each reference axis move away from
From X1And Z1The X-axis and Z axis coordinate of the respectively described sweep starting point, X4And Z4It is sat for the X-axis and Z axis of the analog scanning terminal
Mark, k are pilot process amount, and Δ is the absolute value of the second distance and the difference of first distance.
Preferably, it is described according to the second distance, it is described first distance, the sweep starting point and the reference point position
The step of setting, determining the route by the sweep starting point to target endpoint, including：
Distance measuring sensor is moved to the ranging along Y-axis with reference to the shifting that busbar distance is the first distance in the reference point
Dynamic terminal is obtained across the actual scanning route of the sweep starting point and mobile terminal；
Or, calculating the difference of the second distance and first distance；Obtain the analog scanning terminal along perpendicular to
The ranging refers to interpolated point of the route of busbar after ranging difference with reference to described in busbar；It obtains across the scanning
The target route equation of starting point and the interpolated point.
Preferably, the distance measuring sensor is by being arranged in the radiographic source and/or detector for scanning the scanned copy
On moved.
A kind of industry CT scanning motion from parallel device, including：
Acquisition module, the position for obtaining sweep starting point determine on scanned copy with the sweep starting point apart from minimum
Ranging refers to busbar, obtains the first distance that the sweep starting point refers to busbar with the ranging；It obtains with the sweep starting point
For the analog scanning route of starting point, the position of reference point is chosen in the analog scanning route projects the projection line to reference planes
It sets, obtains the second distance that the reference point refers to busbar to the ranging；
Processing module, for according to the second distance, first distance, the sweep starting point and the reference point
Position determines the route by the sweep starting point to target endpoint；
Wherein, the reference planes are the common plane that the sweep starting point refers to busbar with the ranging, the target
Terminal is that the reference point is referred on the vertical segment of busbar, with the ranging to the ranging with reference to described in being at a distance from busbar
The point of first distance.
Preferably, the acquisition module includes：
Distance measuring sensor while for being moved along Z axis, measures the spacing with the scanned copy, and/or along Y-axis in real time
While mobile, the spacing with the scanned copy is measured in real time；
Position acquisition unit obtains when being moved to along Z axis the spacing minimum with the scanned copy for the distance measuring sensor
Take the position of the distance measuring sensor.
Preferably, the processing module is used for the space coordinate by the sweep starting point and the reference point, determines institute
It states in actual scanning route and is from the sweep starting point along the distance relation equation that each change in coordinate axis direction moves：
Wherein, X, Y and Z be respectively in the actual scanning route by the sweep starting point along each reference axis move away from
From X1And Z1The X-axis and Z axis coordinate of the respectively described sweep starting point, X4And Z4It is sat for the X-axis and Z axis of the analog scanning terminal
Mark, k are pilot process amount, and Δ is the absolute value of the second distance and the difference of first distance.
Preferably, the distance measuring sensor is arranged in the radiographic source and/or detector for scanning the scanned copy.
Industry CT scanning motion provided by the invention, can be by being scanned from parallel mode and device from sweep starting point
The simulation of route, and it is parallel with reference to busbar space with ranging with reference at a distance from busbar, obtaining by measuring the ranging with scanned copy
Actual scanning route.The above method can cope with scanned copy and the nonparallel facilities of fixture lathe bed, can also cope with scanning
Part axis and the nonparallel situation of standard scan route, can be by making scanning route real with scanned copy from after parallel adjustment process
The rotation axis on border is parastate, reduces the requirement to workpiece and lathe bed levelness, ensure that the accuracy of scanning.This hair
The adjustment of the bright geometry site that can accelerate industrial CT scan, effectively improves in-site installation and the geometric position of industrial CT equipment
Relationship is regulated the speed, and above method high degree of automation, position are regulated the speed fast and efficient.
The present invention also provides a kind of industry CT scanning motions from parallel device, for realizing above-mentioned industry CT scanning motion
From parallel mode.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the flow chart of specific embodiment of the industry CT scanning motion provided by the present invention from parallel mode；
Fig. 2 is interpolation principle figure of the industry CT scanning motion provided by the present invention from parallel mode；
Fig. 3 is interpolation principle detail view of the industry CT scanning motion provided by the present invention from parallel mode.
Reference numeral is：Ranging refers to busbar 1.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Core of the invention is to provide a kind of industry CT scanning motion from parallel mode and device, and this method and device can
Make industry CT scanning motion auto-paralleling in the rotary generatrix of scanned copy, keeps scanning process easier and quick.
It is specific embodiment of the industry CT scanning motion provided by the present invention from parallel mode to please refer to Fig.1 to Fig. 3, Fig. 1
Flow chart；Fig. 2 is interpolation principle figure of the industry CT scanning motion provided by the present invention from parallel mode；Fig. 3 is institute of the present invention
Interpolation principle detail view of the industry CT scanning motion from parallel mode is provided.
A kind of industrial CT scan provided by the present invention is mainly used for making industrial CT scan from parallel mode, can both use
During adjustment before scanning, in the correction course that can be used for scanning process, this method includes mainly：
Step S1：The position for obtaining sweep starting point determines ranging minimum with sweep starting point distance on scanned copy with reference to female
Line obtains the first distance that sweep starting point refers to busbar with ranging.
In above-mentioned steps S1, sweep starting point is the initial point being scanned to scanned copy, is appointed in space for scanned copy
For the case where meaning position, sweep starting point can select arbitrary point position.In above-mentioned steps determine scanned copy on scan
The minimum ranging of point distance refers to busbar, and autoparallel ranging is as adjusted in this method and refers to busbar, from the mesh of parallel mode
Mark is exactly parallel with reference to busbar with above-mentioned ranging after so that scanning route is adjusted.
It needs it is to be noted that the ranging in the application is interpreted as the ranging of scanned copy with reference to where busbar with reference to busbar
Space line, i.e. ranging can extend with reference to busbar to both ends.Ranging with reference to busbar refer to be parallel to workpiece rotary shaft line and
The ranging reference line being convenient for measuring, ranging can be on workpiece with reference to busbar, can be on fixture, can also be on lathe bed.On
It is the air line distance that sweep starting point refers to busbar with ranging to state the first distance in step, i.e., sweep starting point to ranging is with reference to busbar
Minimum range.
Above-mentioned steps determine that the position of sweep starting point and ranging refer to the position of busbar, and sweep starting point is determined and sweeps
Retouch the relative position relation of part.
Step S2：It obtains using sweep starting point as the analog scanning route of starting point, is projected to reference to flat in analog scanning route
The position that reference point is chosen in the projection line in face obtains the second distance that reference point refers to busbar to ranging.
In above-mentioned steps, analog scanning route is the analog scanning circuit using the sweep starting point of step S1 as starting point, mould
Quasi- sweep circuit can be understood as radiographic source or detector carries out the simulation mobile route before real scan, or pass through calculating
The route that the processing modules such as machine are simulated.Analog scanning route can arbitrarily determine, such as in space coordinates, Ke Yiyan
Reference axis is moved, or chooses the movement for having certain angle with reference axis.Analog scanning route is projected to reference to flat
Face, and a reference point is chosen in projection line, wherein reference planes are that sweep starting point is put down with ranging with reference to the public of busbar
Face.
It needs it is to be noted that second distance is the air line distance that reference point and ranging refer to busbar in above-mentioned steps, that is, to join
Examination point refers to the minimum range of busbar to ranging.
It needs it is to be noted that projection line and analog scanning route in the application can be understood as space line, you can
With the straight line extended to both direction.Reference point is with sweep starting point, ranging with reference to the coplanar point of busbar, that is to say, that reference
Point is each perpendicular to ranging with above-mentioned first straight line with reference to the straight line where the second distance of busbar to ranging and refers to busbar, and is phase
Mutually two parallel straight lines, above-mentioned first encloses apart from straight line, ranging where place straight line, second distance with reference to busbar and projection line
It is trapezoidal at one.
Step S3：According to second distance, first distance, sweep starting point and reference point position, determine by sweep starting point to
The route of target endpoint.
Wherein, target endpoint is on vertical segment of the reference point to ranging with reference to busbar, with ranging with reference at a distance from busbar
For the point of the first distance.
Each distance obtained according to step S2, the trapezoidal target endpoint that can obtain put position and surrounded are reference point
With reference to the point at a distance from busbar being the first distance on vertical segment to ranging with reference to busbar, with ranging, this point is target
Terminal, according to straight line plane relation it is recognised that being to be parallel to ranging in space by the straight line of sweep starting point to target endpoint
With reference to the straight line of busbar, detector or radiographic source for scanning are moved by sweep starting point according to the straight line, then can be with
Realize that be parallel to ranging moves with reference to the scanning of busbar.
The industry CT scanning motion that the present embodiment is provided, can be by being scanned from parallel mode from sweep starting point
The simulation of route, and it is parallel with reference to busbar space with ranging with reference at a distance from busbar, obtaining by measuring the ranging with scanned copy
Actual scanning route.The above method can cope with scanned copy and the non-level facilities of fixture lathe bed, can also cope with scanning
Part axis and the nonparallel situation of standard scan route, can be by making scanning route real with scanned copy from after parallel adjustment process
The rotation axis on border is parastate, ensure that the accuracy and agility of scanning.The present invention also provides a kind of industry CTs to sweep
Movement is retouched from parallel device.
It needs it is to be noted that above-mentioned ranging process can be carried out by a variety of measurement methods, such as with distance measuring sensor
Or the modes such as manual measurement.However, in contrast, the mode of manual measurement is simultaneously inaccurate, and more expends the time.
In a specific embodiment provided by the present invention, the step of the position for obtaining sweep starting point in above-mentioned steps S1
Suddenly, it can specifically include：
Step S11：Distance measuring sensor is moved along Z axis in default starting point and is measured at a distance from scanned copy, is obtained and is surveyed
Being measured away from sensor with scanned copy spacing minimum point is sweep starting point.
In above-mentioned steps, distance measuring sensor can be the sensor that range measurement is carried out by the modes such as infrared.It presets
Point can be the home position of radiographic source or detector, this position may have the inclined of certain position with the busbar of scanned copy
Difference is not appropriate for as sweep starting point, it is possible to by making distance measuring sensor be moved along a reference axis, and in movement
It is sweep starting point to be obtained in the process with the point of scanned copy spacing minimum, and certainly, in moving process, distance measuring sensor needs to implement
Scanned copy is measured, and then obtains the minimum position of distance.This step S11 can eliminate scanning route in the Z-axis direction
Offset, avoid biasing of the sweep starting point on Z axis, full out determine scanning route starting point, to be scanned route
Correction.It needs it is to be noted that above-mentioned movement is not limited in the Z axis along space coordinates, the above-mentioned shifting it can be seen from its principle
Dynamic purpose be exactly find with as the case may be can also be along X-axis or Y-axis with reference to the minimum position of ranging busbar distance
It is moved.
In addition, moved in Z-direction using distance measuring sensor in the present embodiment, the present invention also side of being not limited thereto
Method can also measure minimum distance by other sensors device or by static method.
It, can be on the basis of above-mentioned steps S11, for obtaining in another specific embodiment provided by the present invention
It takes using sweep starting point as the analog scanning route of starting point, choose ginseng in the projection line that analog scanning route projects to reference planes
The step of position of examination point, can specifically include following steps S12 and step S13：
Step S12：Determine that analog scanning route is parallel to X-direction, distance measuring sensor is by sweep starting point along parallel
It is moved to analog scanning terminal in the direction of X-axis.
In above-mentioned steps S11, distance measuring sensor is eliminating scanning route in Z axis side along the process that Z axis moves
Upward offset avoids biasing of the sweep starting point on Z axis.In above-mentioned steps S12, the analog scanning route of distance measuring sensor
It is determined as along the direction of X-axis, and can stops after mobile a distance, and determines that halt is analog scanning terminal.
It needs it is to be noted that in order to be adjusted to route in different reference axis, the analog scanning of distance measuring sensor
Route needs the moving direction in step S11, so analog scanning route may be Y direction,
Step S13：Distance measuring sensor is moved along Z axis, chooses the point that distance measuring sensor refers to busbar spacing minimum with ranging
For reference point.
In above-mentioned steps, it can adjust analog scanning route simulation by making distance measuring sensor be moved again along Z axis and sweep
Retouch the deviant of terminal.When it is reference point with reference to the point of busbar spacing minimum to choose distance measuring sensor with ranging, due to scanning
Starting point, reference point to ranging are that the line segment of busbar is referred to perpendicular to ranging with reference to the distance of busbar, so reference point is by lucky position
It planar, is scanned that is, the place linear projection of analog scanning route has been arrived with reference to busbar in sweep starting point, ranging
Point, ranging refer to busbar institute planar.In the above method, by the way that mobile and ranging is carried out in different reference axis respectively,
The adjustment of analog scanning route can be decomposed in different reference axis, and then realize the adjustment of route entirety.
In a specific embodiment provided by the present invention, in above-mentioned steps S3 according to second distance, first distance, sweep
The step of retouching the route of the location determination of starting point and reference point by sweep starting point to target endpoint, can specifically include：
Step S31：By the space coordinate of sweep starting point and reference point, determine in actual scanning route from sweep starting point edge
The distance relation equation of each change in coordinate axis direction movement is：
Wherein, X, Y and Z are respectively the distance moved along each reference axis by sweep starting point in actual scanning route, X1And Z1
The respectively X-axis of sweep starting point and Z axis coordinate, X4And Z4For the X-axis and Z axis coordinate of analog scanning terminal, k is pilot process amount,
Δ is the absolute value of the difference of second distance and the first distance.
Specifically, the space coordinate of acquisition sweep starting point and reference point is needed before the step, and is carried out according to above-mentioned formula
It calculates, above-mentioned formula expression is when moving along the x-axis X from sweep starting point, accordingly, it is desirable to move Y along Y-axis and moved along Z axis
Dynamic Z, the X in formula1、Z1、X4And Z4The known quantity measured by abovementioned steps.
The above method is adjusted using interpolation principle, and concrete principle please refers to Fig.2 and Fig. 3, and Fig. 2 is provided by the present invention
Interpolation principle figure of the industry CT scanning motion from parallel mode；Fig. 3 is industry CT scanning motion provided by the present invention from parallel side
The interpolation principle detail view of method.
Coordinate O in Fig. 21(X, Y, Z) is the first reference frame, point S1(X1,Y1,Z1) it is sweep starting point, which is to pass through
It moves the most short ranging position that can be obtained the ranging of opposite piece rotation profile cylinder outer circle with reference to busbar, point along Z axis
S2(X2,Y2,Z2) it is analog scanning terminal, point S4(X4,Y4,Z4) it is reference point, above-mentioned target endpoint P is the midpoints Fig. 3 S4To ranging
With reference to the vertical segment and line segment S of busbar1S5Intersection point, it is known that line segment S4P and line segment S1P is vertical.It is corresponding, coordinate O2
(x, y, z) is the reference coordinate that the second reference frame can also be used as self-balancing adjustment.The vertical pass in Fig. 3 according to fig. 2
System and right angled triangle relationship can obtain S1P and S1S5It is parallel with reference ranging busbar, therefore following pass can be obtained
It is formula：
It can obtain moving from sweep starting point along each change in coordinate axis direction in above-mentioned actual scanning route according to above-mentioned relation formula
Distance relation equation, the movement on each kinematic axis can be carried out automatically controlling based on above-mentioned distance relation equation synchronization, it is real
Existing industry CT scanning device scanning hierarchical motion from parallel.
It needs it is to be noted that distance measuring sensor can be by being arranged in the radiographic source for scanning the scanned copy in the application
And/or moved on detector, so above-mentioned first coordinate system and the second coordinate system can correspond respectively to radiographic source and spy
Survey device.
It need not be moved in above-mentioned steps S31, after the completion of step S31, obtain the distance of actual needs interpolation, ray
Source and detector can be carried out by sweep starting point with the movement of interpolation distance.
In another specific embodiment provided by the present invention, in above-mentioned steps S3, according to second distance, first away from
From, the position of sweep starting point and reference point, the step of determining the route by sweep starting point to target endpoint, can specifically include：
Step S32：Distance measuring sensor is moved to ranging along Y-axis with reference to the shifting that busbar distance is the first distance in reference point
Dynamic terminal is obtained across the actual scanning route of sweep starting point and mobile terminal.
Referring to FIG. 3, the point S in Fig. 35(X5,Y5,Z5) it is the second target endpoint, the second target endpoint needs for reference point
A distance is moved along Y direction, to ensure to adjust suitable point with reference to busbar distance with ranging.
Unlike step S31, the interpolation distance of each reference axis when step S31 is using calculating actual scanning, and
Step S32 is to obtain the ranging of scanned copy with reference to busbar by being moved along Y-axis in reference point, while by distance measuring sensor
Position, that is, obtain S during moving and measure5, may then pass through control radiographic source or detector moved by sweep starting point
It moves to the second target endpoint S5, you can to realize the scanning for being parallel to busbar.
Alternatively, it is also possible to optional step S33, step S33 is specially：
Calculate the difference of second distance and the first distance；
Obtain analog scanning terminal along perpendicular to ranging with reference to busbar route close to ranging with reference to inserting after busbar difference
Mend point；
Obtain the target route equation across sweep starting point and interpolated point.
Above-mentioned steps S33 mainly calculates the position of interpolated point using the method calculated, so scan synthesis starting point with insert
The linear equation at point place is mended as target route equation.
On the basis of above-mentioned any embodiment, distance measuring sensor can be by being arranged in radiographic source and/or detector
On moved, radiographic source and/or detector are used to scan the scanned copy.Distance measuring sensor is arranged in radiographic source or detection
On device, original mobile device can be utilized to complete simulation movement.
It needs it is to be noted that simulation mobile route involved in the application can be the simulation movement of distance measuring sensor,
Can be mobile by the imagination of computer disposal, corresponding, the ranging process in moving process can be by other means
It realizes.
It needs it is to be noted that stating in use from before parallel mode, system should have radiographic source lathe bed plane and detection
The adjusted parallel condition of device lathe bed plane, meanwhile, the main main covering of the fan of covering of the fan opposing detector of radiographic source is adjusted parallel.It surveys
Can be fixedly installed on radiographic source and detector away from sensor, on work piece holder/lathe bed or scanning workpiece on should have for
The ranging parallel with workpiece rotary shaft line for obtaining most short ranging refers to busbar.
Optionally, above-mentioned distance measuring sensor can be laser range sensor or infrared distance sensor etc..
From parallel mode, the present invention also provides one kind to be used for for the industry CT scanning motion provided in addition to above-described embodiment
Realize the above method industry CT scanning motion from parallel device, the device based on original industry CT scanning device,
Include mainly in structure：
Acquisition module, the position for obtaining sweep starting point determine ranging minimum with sweep starting point distance on scanned copy
With reference to busbar 1, the first distance that sweep starting point refers to busbar 1 with ranging is obtained；Acquisition is swept by the simulation of starting point of sweep starting point
Route is retouched, the position of reference point is chosen in the projection line that analog scanning route projects to reference planes, obtains reference point to survey
Away from the second distance with reference to busbar 1.
Processing module is determined for the position according to second distance, the first distance, sweep starting point and reference point by scanning
Route of the starting point to target endpoint.
Wherein, acquisition module is connect with processing module, for the location information of acquisition and range information to be sent to processing
Module.In addition, reference planes are the common plane that sweep starting point refers to busbar 1 with ranging, target endpoint is reference point to ranging
With reference to the point at a distance from busbar being the first distance on vertical segment with reference to busbar, with ranging.
The industry CT scanning motion that the present embodiment is provided is from parallel device, by being scanned route from sweep starting point
Simulation, acquisition module measures with the ranging of scanned copy with reference at a distance from busbar, and processing module is obtained with ranging with reference to busbar sky
Between parallel actual scanning route.The specifically used method of above-mentioned apparatus please refers to above-mentioned industry CT scanning motion from parallel side
Method, the device can pair workpiece setting situations unhorizontal with fixture lathe bed, it is ensured that from after parallel process, scan route
It is parastate with the actual rotation axis of scanned copy, ensure that the accuracy of scanning.
On the basis of above-described embodiment, acquisition module may include distance measuring sensor and position acquisition unit.
While distance measuring sensor is mainly used for moving along Z axis, the spacing with scanned copy is measured in real time, and/or move along Y-axis
While dynamic, the spacing with scanned copy is measured in real time.
When position acquisition unit is mainly used for distance measuring sensor and is moved to the spacing minimum with scanned copy along Z axis, obtains and survey
Position away from sensor.
On the basis of above-described embodiment, processing module can also be specifically used for the sky by sweep starting point and reference point
Between coordinate, determine in actual scanning route and be from sweep starting point along the distance relation equation that each change in coordinate axis direction moves：
Wherein, X, Y and Z are respectively the distance moved along each reference axis by sweep starting point in actual scanning route, X1And Z1
The respectively X-axis of sweep starting point and Z axis coordinate, X4And Z4For the X-axis and Z axis coordinate of analog scanning terminal, k is pilot process amount,
Δ is the absolute value of the difference of second distance and the first distance.
Optionally, processing module can be also used for realizing the operation of above-mentioned steps S32 and step S33.
Specifically, processing module can be used for distance measuring sensor reference point along Y-axis be moved to ranging with reference to busbar away from
Mobile terminal with a distance from for first is obtained across the actual scanning route of sweep starting point and mobile terminal.
Optionally, processing module can be also used for calculating the difference of second distance and the first distance, and it is whole to obtain analog scanning
Point along perpendicular to ranging with reference to busbar route close to ranging with reference to the interpolated point after busbar difference, obtain across sweep starting point and
The target route equation of interpolated point.
The i.e. main position that interpolated point is calculated using the method calculated, and then where scan synthesis starting point and interpolated point
Linear equation is as target route equation.
Optionally, distance measuring sensor is arranged in the radiographic source and/or detector for scanning the scanned copy.Certainly, it surveys
It can also be arranged on other devices away from sensor, the position of scanned copy is measured by the movement of the device.
Optionally, the type of distance measuring sensor can be laser class or infra red type etc..
Industry CT scanning motion provided by the present invention is reduced from parallel device to fixture lathe bed requirement for horizontality, is passed through
It decomposes in three reference axis, is may be implemented for the scanning route with the non-level workpiece of fixture lathe bed route will be scanned
Parallel adjustment so that in the case of workpiece and fixture lathe bed are non-level, the higher quick scanning of accuracy can also be carried out.Industry
CT scan movement is more easily to realize industry CT radiographic source and detection based on the above-mentioned application from parallel mode from parallel device
The auto-paralleling of device relative position scans, and the geometric position scene for greatly improving industrial CT equipment is regulated the speed.
In addition to the industry CT scanning motion disclosed in above-described embodiment is from the primary structure of parallel device, the device other
Refer to the prior art for the structure of each section, and repeats no more herein.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
Industry CT scanning motion provided by the present invention is described in detail from parallel mode and device above.Herein
In apply specific case principle and implementation of the present invention are described, the explanation of above example is only intended to sides
Assistant solves the method and its core concept of the present invention.It should be pointed out that for those skilled in the art, not
, can be with several improvements and modifications are made to the present invention under the premise of being detached from the principle of the invention, these improvement and modification are also fallen into
In the protection domain of the claims in the present invention.
Claims (10)
1. a kind of industry CT scanning motion is from parallel mode, which is characterized in that including：
The position for obtaining sweep starting point determines that ranging minimum with sweep starting point distance on scanned copy refers to busbar, obtains
The sweep starting point refers to the first distance of busbar with the ranging；
It obtains using the sweep starting point as the analog scanning route of starting point, is projected to reference planes in the analog scanning route
The position that reference point is chosen in projection line obtains the second distance that the reference point refers to busbar to the ranging；
According to the second distance, the position of first distance, the sweep starting point and the reference point, determination is swept by described
Retouch starting point to target endpoint route；
Wherein, the reference planes are the common plane that the sweep starting point refers to busbar with the ranging, the target endpoint
It is described first to refer on the vertical segment of busbar, referred at a distance from busbar with the ranging for the reference point to the ranging
The point of distance.
2. industry CT scanning motion according to claim 1 is from parallel mode, which is characterized in that the acquisition sweep starting point
Position the step of, including：
Distance measuring sensor is moved along Z axis in default starting point and is measured at a distance from the scanned copy, is obtained the ranging and is passed
What sensor measured is the sweep starting point with the point of scanned copy spacing minimum.
3. industry CT scanning motion according to claim 2 is from parallel mode, which is characterized in that the acquisition is swept with described
The analog scanning route that starting point is starting point is retouched, reference is chosen in the analog scanning route projects the projection line to reference planes
The step of position of point, including：
Determine that the analog scanning route is parallel to X-direction, the distance measuring sensor is by the sweep starting point along parallel
It is moved to analog scanning terminal in the direction of X-axis；
The distance measuring sensor is moved along Z axis, chooses the point that the distance measuring sensor refers to busbar spacing minimum with the ranging
For the reference point.
4. industry CT scanning motion according to claim 3 is from parallel mode, which is characterized in that described according to described second
The position of distance, first distance, the sweep starting point and the reference point, determines by the sweep starting point to target endpoint
Route the step of, including：
By the space coordinate of the sweep starting point and the reference point, determine in actual scanning route from the sweep starting point edge
The distance relation equation of each change in coordinate axis direction movement is：
Wherein, X, Y and Z are respectively the distance moved along each reference axis by the sweep starting point in the actual scanning route, X1
And Z1The X-axis and Z axis coordinate of the respectively described sweep starting point, X4And Z4For the X-axis and Z axis coordinate of the analog scanning terminal, k
For pilot process amount, Δ is the absolute value of the second distance and the difference of first distance.
5. industry CT scanning motion according to claim 3 is from parallel mode, which is characterized in that described according to described second
The position of distance, first distance, the sweep starting point and the reference point, determines by the sweep starting point to target endpoint
Route the step of, including：
The distance measuring sensor the reference point along Y-axis be moved to the ranging with reference to busbar distance be first distance
Mobile terminal, be obtained across the actual scanning route of the sweep starting point and the mobile terminal；
Or, calculating the difference of the second distance and first distance；The analog scanning terminal is obtained along perpendicular to described
Ranging refers to interpolated point of the route of busbar after ranging difference with reference to described in busbar；It obtains across the sweep starting point
With the target route equation of the interpolated point.
6. industry CT scanning motion according to claim 2 to 5 any one is from parallel mode, which is characterized in that described
Distance measuring sensor is moved by being arranged on the radiographic source and/or detector for scanning the scanned copy.
7. a kind of industry CT scanning motion is from parallel device, which is characterized in that including：
Acquisition module, the position for obtaining sweep starting point determine ranging minimum with sweep starting point distance on scanned copy
With reference to busbar, the first distance that the sweep starting point refers to busbar with the ranging is obtained；It obtains with the sweep starting point and is
The analog scanning route of point chooses the position of reference point in the analog scanning route projects the projection line to reference planes,
Obtain the second distance that the reference point refers to busbar to the ranging；
Processing module, for the position according to the second distance, first distance, the sweep starting point and the reference point
It sets, determines the route by the sweep starting point to target endpoint；
Wherein, the reference planes are the common plane that the sweep starting point refers to busbar with the ranging, the target endpoint
It is described first to refer on the vertical segment of busbar, referred at a distance from busbar with the ranging for the reference point to the ranging
The point of distance.
8. industry CT scanning motion according to claim 7 is from parallel device, which is characterized in that the acquisition module packet
It includes：
Distance measuring sensor while for being moved along Z axis, measures the spacing with the scanned copy, and/or move along Y-axis in real time
While, the spacing with the scanned copy is measured in real time；
Position acquisition unit when being moved to along Z axis the spacing minimum with the scanned copy for the distance measuring sensor, obtains institute
State the position of distance measuring sensor.
9. industry CT scanning motion according to claim 8 is from parallel device, which is characterized in that the processing module is used for
By the space coordinate of the sweep starting point and the reference point, determine in actual scanning route from the sweep starting point along each seat
Parameter direction movement distance relation equation be：
Wherein, X, Y and Z are respectively the distance moved along each reference axis by the sweep starting point in the actual scanning route, X1
And Z1The X-axis and Z axis coordinate of the respectively described sweep starting point, X4And Z4For the X-axis and Z axis coordinate of the analog scanning terminal, k
For pilot process amount, Δ is the absolute value of the second distance and the difference of first distance.
10. industry CT scanning motion according to claim 8 to 9 any one is from parallel device, which is characterized in that described
Distance measuring sensor is arranged in the radiographic source and/or detector for scanning the scanned copy.
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| CN107764844A (en) * | 2017-09-21 | 2018-03-06 | 重庆真测科技股份有限公司 | The position adjustment and its method of adjustment of large-scale CT detection devices |
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| DE102010043226A1 (en) * | 2010-11-02 | 2012-05-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method and evaluation device for determining the position of a structure in an object to be examined by means of X-ray computer tomography |
| DE102012204134B4 (en) * | 2012-03-16 | 2021-02-11 | Siemens Healthcare Gmbh | Method for the automatic determination of imaging planes and magnetic resonance system |
| CN203749432U (en) * | 2014-03-06 | 2014-08-06 | 北京锐视康科技发展有限公司 | Geometric position correction system for cone beam CT system |
| CN104406989B (en) * | 2014-10-31 | 2017-01-11 | 清华大学 | Double wire model-based CT system structure parameter measuring method and apparatus thereof |
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